tfra08c13 ETC-unknow, tfra08c13 Datasheet - Page 101

• Manufacturer Part Number: tfra08c13
• Description: Tfra08c13 Octal T1/e1 Framer
• Manufacturer: ETC-unknow

Preliminary Data Sheet
October 2000
Lucent Technologies Inc.
Lucent Technologies Inc.
Concentration Highway Interface
CHI Frame Timing
CHI Timing with CHIDTS Disabled
Figure 37 illustrates the CHI frame timing when CHIDTS is disabled (registers FRM_PR65 bit 1 (TCHIDTS) and
FRM_PR66 bit 1 (RCHDTS) = 0) and the CHI is not in the associated signaling mode (FRM_PR44
bit 2 (ASM) = 0). The frames are 125 ms long and consist of 32 contiguous time slots.
In DS1 frame modes, the CHI frame consists of 24 payload time slots and eight stuffed (unused) time slots.
In CEPT frame modes, the CHI frame consists of 32 payload time slots.
* The position of the stuffed time is controlled by register FRM_PR43 bit 0—bit 2.
2.048 Mbits/s CHI:
2.048 Mbits/s CHI:
4.096 Mbits/s CHI:
8.192 Mbits/s CHI:
Figure 37. Nominal Concentration Highway Interface Timing (for FRM_PR43 bit 0—bit 2 = 100 (Binary))
CEPT FORMAT
DS1 FORMAT
RCHIDATA
RCHIDATA
RCHIDATA
RCHIDATA
TCHIDATA
TCHIDATA
TCHIDATA
TCHIDATA
CHIFS
or
FRAME 1
FRAME 1
FRAME 1
FRAME 1
24 VALID TIME SLOTS
24 VALID TIME SLOTS
(continued)
32 VALID TIME SLOTS
FRAME 1
FRAME 1
125 s
HIGH IMPEDANCE
HIGH IMPEDANCE
TFRA08C13 OCTAL T1/E1 Framer
HIGH IMPEDANCE
8 STUFFED
SLOTS*
FRAME 2
FRAME 2
FRAME 2
FRAME 2
FRAME 2
FRAME 2
FRAME 2
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